Mining companies
Anglo American
Aur
Barrick
BHP-Billiton
Buenaventura
Codelco
Coeur d”Alene
Kinross
Newmont
Northern Dynasty
Nova Gold
Penoles
Phelps Dodge
Placer Dome
Rio Tinto

International donors
World Bank
United Nations Development Programme
Inter-American Development Bank
African Development Bank

Industrial and energy companies
BC Hydro
Biwater International
Botswana Ash
Cairn Energy India
FMC Corporation
Kennecott Energy
LaFarge
Shell
Sierra Pacific Power
Solvay

Governments & environmental agencies
Department for International Development (UK)
Department for Environment Food & Rural Affairs (UK)
Environment Agency (UK)
Ministry of Public Utilities (Mauritius)
Ministry of Energy and Mines (Peru)
Ministry of Environment (Colombia)
Ministry of Public Works (Chile)
International Joint Commission (US & Canada).
Servicio de Geologia y Mineria (Bolivia)

Water utilities
Aguas Andinas (Chile)
Water & Sewerage Corporation (The Bahamas)
Southern Water (UK)
South Staffordshire Water (UK)
Severn Trent Water (UK)
United Utilities (UK)
Yorkshire Water (UK)
City of Vancouver (Canada)
Larimer Ditch Co (USA)
Grand Country Ditch Co. (USA)
Orchard Mesa